Calculating-machine.



. H. SEARS;

LATING KINE- APPLICATION nu. 11.21, 1993.

Patented June 21, 1910.

11 SHEETS-SHEET 1.

' G. H. SEARS. CALCULATING MACHINE.

I APPLICATION FILED IEB.27, 1903. 961,806. Patented June 21, 1910.

11 SHEETS-SHEET 2.

Attorney G. H. SEARS. CALCULATING MACHINE. APPLICATION FILED n13.27, 1903.

Patented June 21,1910.

11 SHEETS-SHEET 3.

| n 5 ww l v r l II wihwoaeo G. H. SEARS.

CALCULATING MACHINE. Arrmouron FILED 113.27, 190a.

11 BHEETB BHI-IET 4.

' a Ililiilili!" E 1 7,04 1; i L

'l 'aafi e; H. SEARS.

CALCULATING MAGHINE. APPLIOATIOH I'ILED I'BIB.27, 1903.

Patented June 21, 1910.

11 SHEETS-SHEET 6.

I i f lnuon r01 QLM WW QMQQA; CZ;

G. H. SEARS. GALUULATING MACHINE.

v APPLICATION FILED PEILZ'I, 1903. 961 ,806. Patented June 21,1910.

11 SHEETS-SHEET I.

G. H. SEARS. CALCULATING monmn.

, I APPLIOATIOI rILnn rzndmi aba. 961,806. Patented'June 21,1910.

11 SHEETS-SHEET B.

witnesses Patented June 21, 1910.

11 SHEETS-SHEET 9.

m1 lilllllll??? G. H. SEARS.

CALCULATING MACHINE.

APPLICATION FILED FEB.27, 1903.

- 961,806. Patented June 21,1910.

11 SHEETS-SHEET l0.

G. H. SEARS. GALOU'LATING mom.

APPLICATION FILED IEB.27, 1903.

. Patented June 21, 1910.

11 SHEETS-SHEET 11.

WIRIK II! it I ventor.

Attorney companying drawings, formin UNITED STATES PATENT OFFICE.

GEORGE H. SEARS, OF ROCHESTER, NEW

YORK ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF THBEE-FOURTHS TO ANGUS E. HUTHER AND WARREN B.

HUTHER, OF ROCHESTER, NEW YORK.

CALCULATING-MACHINE.

Specification of Letters Patent. Patented. J 119, 21, 1910,

Application filed February 27, 1903. Serial No. 145,340.

-To all whom it may concern:

Be it known that I, Gnonon H. SEARS, of Rochester, in the county of Monroe and State of New York, have'invented certain new and useful improvements in Calculatin Machines; and I do hereby declare the ollowing to be a'full, clear, and exact description of thesame, reference being had to the ac- I a part of this specification, and to the 'reerence characters marked thereon.

M present invention relates to calculating mac ines, and it has for its object to provide a device embodying a plurality of counter mechanisms and a series of keys each adapted to move setting devices into coop erative relationship therewith whereby their respective counter mechanisms may be operated. separately from the keys.

My invention has for, its further object to provide such an arrangement ofthe parts that an error in striking an operatin key may be. corrected, and it also provi es a printin me'chanis'mior making an accurate tally o the result ofeach operation and devices for resetting or restoring all of the parts a to theinnormal position.

Another object of my invention is to provide suitable motors or means for operating the counters and printing mechanisms an resettin devices whereby said parts may be operate successively and at proper relative times.

To these and other ends the invention consists of certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.'

'In the drawings: Figure 1, is a top plan view of an adding machine constructed in accordance with my invention. Fig. 2, is a side elevation thereof showing the operating keys. #5

Fig. 3, is a cross sectional view taken on the line 3"3" of Fig. 1. Fig. 4 is asimilar view on the line 48 X of Fig. 1 and illus= trating the construction and operation of the printing mechanism. Fig. 5, is a plan view of a machine artly in section showing the I and printing: mechanism. isa detail view of a counter operat ing awl. Fig. 6, is a cross sectional view onte line 6"-6 of Fig. 3. Figs. 7 and 8,

are detail views illustrating the operation of Figs. 29 and 30. Fig. 33 is a detail the printing mechanism. Fig. 9, is a detail sectional view on the line 9*-9 'of Fig. 3.

Fig. 10, is a detail view on the line 10"--10 of Fig. 4.. Figs. 11, 12 and 13 are detail views of the counter operating mechanism taken on the line 1l"1'l of Fig. 6. Figs. 14 to 18, are similar views showlng the operation of the carrying devices between adjacent counter wheels and also the operation of devices when the parts are moved manually to return them to the zero position. Fig. 19, is a side elevation of the parts of two adjacent counter wheels in the position shown in 18. Figs. 20 and 21, are side elevations 0 one of the counter wheels with the operating parts mounted thereon. Fig. 22, is a similar view with the shifting plate removed and showing the underlying parts. Fig. 23, is a View illustrating the operation of one of the stop levers in connection with its counter wheel. Fig. 24, is a cross sectional view on-- the line- 24?24 of Fig. 21. Fig. 25 is an elevation of the several stop levers. Fig. 26, is a plan view of'one of said levers. Fig. 27, is a detail side view of the controlling key and parts operated in connection therewith, lsaid key being shown in the operated position. Fig. 28, is a similar view of theparts in end elevation. Fig.

29, is a detail view of the main controlling switch. Fig. 30, is a similar view of the secondary controlling switch. Figs. 31 and 32 are detail views of the contact members forming parts of the switches illustrated in view of the magnets for operatingthe several counter mechanisms, and Fig. 34:, is a diagrammatic View showing the electrical circuits. Fig. 35 is a perspective view of the prlnting mechanism illustrated in Figs. 7 and 8. Fig. 36 is a similar view of the counter operating and transfer mechanism. Fig. 37 is a detail perspective view of one of the counter; wheels, and Fig. 38 isa similar view tliereoi showing the stop plate.

Similar reference characters the several figures indicate similarparts. V An adding machine constructed :in accordance with my invention embodies a plurality of counters whichare arranged to indicate the units, tens, hundreds and thousands places. etc, each of which are adapted to be operated consecutively from zero through the-digits reading from oneto nine by suit- I form abutments adapted to engage beneath the edge of a swinging lock bar 4, when the keys are depressed, which is held yieldingly in engagement with the sides of the keys by means of springs 5, as shown in Figs. 3 and 9. These lugs-are provided with a rounding or angular surface on their outer sides so that a point intermediate the ends of the lug projects beyond the'upperend or abutment operating, when a key is depressed, to

move the locking lbar 4 outwardly beyond thev abutments a su cient distance whereby an other key in the same row, which may have been previously depressed, will be released. The purpose of this arrangement is to allow an operator to correct .amistake in case an error has been committed in depressing. a wrong key or to changea computation without resetting the entire mechanism. EX- tending at the side ofeach row of keys is a setting bar6 attached at its outer end to a pivoted link 7 and at'its opposite extremity tooone end of its setting lever 8, journaled upon a shaft 9, said bars being held in their normal positions by means of a spring 7. Arranged upon the bar 6 are studs or pins 10 with which are adapted to-engage cam surfaces 11 on the operating keys, said surfaces being graduated, as shown in Fig. 3, to move the setting bar and the setting lever a number of spaces relative to the figure in dicated by the key. Thus whenthe first key is depressed the lever is moved one space and when the last key is operated it is moved through ninespaces.

Located in the upper part of the casing isthe counter mechanism embodying counter wheels, one of which is arranged for each of the sets ofoperating keys A, B, G and 1) having provided u on their peripheries the numerals reading om zero to nine which may be viewed through suitable apertures 12 1n the casing. These wheels indicated by a, b, c and d are mounted on a shaft .13 and as they are similar in construction a destop plate 20, journaled on the shaft 13 and movable in one direction independently of its counter wheel, and when moved in the oppo- J site direction the latter is carried with it by engagement of the pawl-15 with a tooth of the ratchet wheel 14, the operation of the is also journaled 011 the shaft and its movement relatively to the stop plate 20 is limited by means of a pin 24 thereon which extendsinto an elongated aperture, as shown in Figs. 20 and 21, whereby the plate is only permitted to move a suflicient distance to move the pawl 15 into and out of operative position before its rotary movement is trans mitted to the plate 20. At one side of the shift plate is provided a small pinion 25 and engaging therewith is a counter actuator in the form of a segmental gear 26 mounted on the arm 27, journaled at its lower end upon a shaft 28. The counter'actuators are operated by electromagnetic devices ar-, ranged, in the present instance, in the form of solenoids W (Figs. 3 and 34) in which operate cores 29 attached to the arms 27 whereby the pinions 25 are operated in one direction to revolve their stop plates 20 and their respective counter wheels and in the opposite direction to return the stop plates to their normal position in engagement with stationary stops, indicated by 20 (see Figs. 3 and 20). These'stops are positioned so that when the plates 20 are arrested the shoulders thereon, corresponding to the zero position of the counter wheels, may pass beyond the ends of the setting levers 8 and the lips 151 thereon. Arranged at the other side of the counting wheel and secured there to. is a combined carrying and locking ratchet wheel 31, having the V-shapcd notches 32, with which engages-the pawl 33, mounted on a rock shaft 34 ournaled in the i'rame 1.

Loosely journaled on the shaft 13 atthe ends thereof is a swinging frame embod the end portions 35 see Figs. 26, 37 and 38 in which are carried rods or shafts 40 and 41 extending overthe counter wheels and supporting .the carrying devices by means of which the higher or succeeding counter wheels are operated through one space at the completion of the rotation of the relative lower counter wheel, as will be understood. These devices .and their operation are illustrated in detail in Figs. 11 to 18 and to these'figures reference will now be made particularly. Extending between the sides of the frame 1 and above the counter wheels is a stationary bar or rod 42 andjournaled. on the shaft 34 is a movable arm 43 provided at its outer end with fingers arranged on opposite sidesof the bar 42 to limit its swinging movement and on'the.

side of the arm is a laterally extending tripping cam or projection 45. At one s1de of P o rating with thehundreds and thousands 5'). This arm is provided with a pin. 49

with which engages'a pivoted latch member 50, mounted on the shaft 40, and adapted to hold the pawl out of engagement with the ratchet wheel 31 during certain movements of the machine, as will be further described.

The pawl 47 is provided with a pin 51 cooperating with the relatively stationary tripping projection'45, on the arm 43, which passes under said projection when it is operating to advance its counter wheel one space, as shown in dotted lines' in Fig. 14, but when it is retracted the pin 51 engaging the projection causes the ayvl 47, attached tothe a1;m'48, to be e evated sufficiently to permit the latch member to engage therewith, as shown in Figs. 16 and 18. The several latch. members 50 are .arranged with their .ends extending beyond the peripheries, of the ratchets '31 and are adapted to be engaged bypins 56 thereon whereby they are tripped when their respective counting wheels are revolved throu h the spaces allowing the pawls 47 on the relatively higher wheels to move into operative position. A similar operation occurs when'each of the other counter wheels is revolved from the nine to the zero position,-

as will be understood. Successive carrying from one counter wheel to another is permitted by proportionatelyshortening of the pawls 47- cooperating with the hundreds andhigher counter wheels to permit them to drop into the notches in the ratchet wheels 31 when the carrying frame has been moved sufficiently tQ actuate the tens, hundreds, etc., counter wheels successively to release the several fpawls, To this en the amplitude of movement of the carrying frame is such that the'lo'ngest pawl '47. engaging the tens-wheel will revolve it through a distance greater'than space between the numerals he'ry. This enables the pawl co-.

wheels to bis-shortened in length. and if a counter wheel is not brought into accurate position byth'eforward movement of the carryin frameit will be further adjusted forwa 1y tor rearwardly by the centering pawls33 which are positively operated during the movement of the carrying frame. One of the" ends 35 of the carrying frame is provided with an arm 52 connected, by means ofa link 53, with one arm 54 of a bell crank lever, pivoted at 55, the other arm 60 i of the said lever'being connected to a core 61 of an electromagnetic operating device X, a's shown in Fig. 4. It will be 'seen from the above that when thebell crank lever 15 operated the carrying frame is oscillated from the positions shown in Figs. 11 and 14 to that'shown in Figs. 13 and 15 thereby causing the operation of each one of the counter wheels whose engaging members or pawls 47 have been moved into the operative position. Thepapvls 33 areheld normally in engagement with their ratchet wheels by means of springs 63 and the accidental overthrow or movement of the counter wheel isprevented by a locking member, controllingthe movement of said pawl such as an arm 64 secured to the rock shaft'and provided with a pin or finger 65 extending in rear of the pawl. 33. 'The shaft-34, as before mentioned, is journaledin the frame 1 and at one end it is-provided with the arm 66 carrying a pin 67 lying in a cam slot in one of the end pieces 35 -of the carrying frame. This slot is providedwith a portion 68 which is arran ed concentric to the center of movement 0 the frame and with a portion 69 arranged at an angle thereto; The

locking members are normally but of engagement with the pawls 33, as shown in Fig. 11, and the first part of the movement of the carrying frame does not operate the rock shaft. This allows the counter wheels to -be revolved by their pawls 47, to the position shown in Fig. 12, .at which time the cam slot 69 begins to raise the arm 66 causing the arms 64 to follow the pawls as they-drop into, the succeeding notches in the ratchetwheels 31, preventing their outward movement, and limiting an further rotation of the counter wheels until the can rying frame has been returned to its normal position.

In order to restore all of the counter wheels to the original or zero position at the completion of each operation, I provide the shaft 13 with small collars arranged adjacent the several counter wheels having single notches 70 therein, (see Figs. 14 and 37) with which is adapted to engage a spring operated dog or pawl 71 pivoted on the counter wheel. At the end of the shaft 13 and arranged exteriorly of the casing is an operating handle 7 2 (see Figs. 1, 2 and 6) carrying a spring operated plunger 73, 'WhlCh 1n the normal position abuts a inst a stop 74 on the side of the casing. I on the carrying frame is also provided with its end extending through a slot or aperture 75, in line with the circle described by the rotary movement of the plunger, and

is adapted to be engaged by the latter just behe shaft 40 fore the handle 7 2 com letes the cycle of movement to oscillate tie carrying frame on the shaft 13 to advance the pawls 47 with the counter-wheels, at the end of their movement, to carry the pins 51. from beneath the tripping projections 45 so that when theframe is released and permitted to drop back to its normal position, the pawls 47 will be elevated and held out of operative position by the latch members 50. For this reason I have broadened the engaging end of the plunger and at each side of the aperture 75 are arranged inclined guides or ways 80 leading to the stop 74, which are adapted to' move the plunger outwardly sufficiently to disengage the shaft 40 allowing it to return to its normal position, as will be understood.

In connection with the above described adding or computing devices I employ a suitable recording or printing mechanism which is so arranged that the operator may if he desires cause the results of the various computations to beprinted upon a ribbon or tape which may afterward be removed. Extending transversely of the machine are a series of rock shafts A, B, C and D, as

shown in Figs. 3 and 6 provided with lever arms 81 connected respectively, by links 82, with the several counter actuator arms 27. These shafts are provided at one end with crank arms 88' connected by means of links or arms 84, with segmental printing beds a, Z), 0 and d journaled upon a stud or shaft 85 secured at one side of the frame (see Figs. 7 and 8). The printing beds are provided with the numerals reading from zero to nine, corresponding with those upon the peripheries of their corresponding counter wheels, and the connection between the operating'mechanism for the latter and the beds is such that they are revolved about their center so that the numerals thereon, corresponding to the numerals to be viewed through the aperture 12,- are arranged in alinement or printing position and adapted to be operated upon by suitable printing devices.

Extending at one side of the frame 1 is a supplemental frame 86 (see Fig. 5) and journaled therein is a frame carrying the platen 87 embodying the side arms 88 each of which is provided with a cam slot 89, as shown in Figs. 7, 8 and 35. Journaled on the shaft 85 is a yoke frame 90 having the ends extending beyond the printing beds and supporting a frame 91, carrying an inking pad 92, and provided with pins 93 en gap .ig in the cam slots 89 and also provided with an operating end or arm 94 extending toward the center or journal point of the yoke frame. 90. Also supported on this frame is a latch member 95 engaging a pin 96 on the frame 1 and provided with an upwardly extending beveled end 97, for a purpose to be further described. The prime mover foroperating the inking frame and the platen consists ofan operating mem' er or lever 98-journaled on the shaft 85 and provided with a pivoted trip arm 99 adapted to engage the arm 94, when the lever 98 is moved in one direction, tocause the inking pad to contact with the printing beds. At the outer end of the lever 98 is provided a slot-100 and lying therein is a pin 105, arranged upon the frame 91, and also provided upon said lever is a pin 106 which cooperates with the end 97 of the latch 95 to disengage it from the pin 96, as shown in Fig. 8, the slot and pin connection between the frame 91 and the lever 98 permits the inking pad to contact with the printing beds, while the relative downward movement of the lever 98 disengages the trip arm 99 from the arm 94. This releases the yoke frame 90 and the continued movement of the lever 98, then moving the frame 91 by means of the pin 105, causes it to be shifted relatively to the platen, while the pins 93 thereon, moving in the slots 89 from the position shown in Fig. 7 to that shown in Fig. 8, cause the platen to move relatively to the printing beds to engage with the type thereon. The outer end of the member or lever 98 is attached to a rod 107 connecting, the cores of oppositely arranged electromagnetic operating devices or solenoids Y and Y whereby it is moved in one direction to operate the printing mechanism and in the other to restore the parts. Theyoke frame 90 is held in the normal position, shown in Fig. 7, by means of a spring 110.

The ribbon of paper is arranged upon a reel supported at 1.15 on the frame and it passes upward in rear of the printing mechanism and between the feeding rollers 116 and 117 journaled on the frame 86, as shown in Figs. 4 and The roller 117 is provided at one end with a ratchet wheel with which engages a pawl 118 carried upon a plate 119, oscillated by means of a lever 120, attached to an arm 121 on the yoke frame 90. The roller 116 is supported in pivoted arms 122 and it is held 1n engagement with the cooperating.feeding'roller by means of a spring 123. 124 indicates a small pawl attached to the frame 186 which also engages the teeth on the roller 117 to prevent itsaccidental rearward movement. The ribbon of paper indicated by 129 extends between the rollers 116 and 117 beneath the platen 87 in rear of a finger 125 on arm 126, which extends over the printing wheels and/beyond the platen 87. At its opposite extremity the arm is provided with a stud or projection 127 which coiiperates with a notch 128 in the plate 119, so arranged that the finger is depressed, as shown in Fig. 8, during the printing operation and elevated thereafter,

as shownin Fig. 7, carrying with it the paper as it is fed forward to expose the printed impression thereon in sight of the operator.

At the completion-of each operation of the counter wheels, the stop plate 20 and the shift plate 22 are returned to their normal position, as shown in Fig. 3, by means of a resetting bar or lever 131 carried in arms 132, journaled on the shaft28, one of which is provided with adownwardly extending end 133.attached to the core 134 of will be returned to normalposition. The

resetting or returning'of the operating keys to their normal position is accomplished by means of a releaslng'bar 140-which is guided in the frame 1, beneath the swinging locking bars 4, and it is-provided with fingers or projections 141 (Fig. 9) adapted to engage therewith. As it frequently occurs that it is desirable to repeat a number already indicated upon the counting wheels, I provide means which may beoperated manually for preventing the disengagement of the operating keys. The releasing bar 140 is mounted upon a sliding-bar 142 longitudinally movable in the frame and provided with the inclined portions. 143 which when the bar is moved outwardly, asshown in dotted lines in Fig. 9, allows it to fall and the bar 140 riding thereon to be moved a sufficient distance to carry the fingers 141 out of opera- 'tive. position beneath the locking bars 4. -Th'e releasing bar has attached at its outer end a pivoted lever 144 (see Fig. 10) having an angularouter end 145 held in operative engagement with a finger or projection 146 on the lever 54 by means of aspring 147 whereby as the lever is moved to operate the carrying mechanism the operating keys are also'released.

The electromagnetic devices by which the various mechanisms of my machine are op.- erated are illustrated in the form of solenoids, a form preferably employed on account of the-small space they occupy and also because of the convenience in locating them at various oints to obtain their greatest effectiveness, ut it will be understood that other motive power mayibe employed to obtain the same results. As before explained the operating keys when depressed set the levers 8 in such position that the spirally stepped stop plates 20 will engage therewith when the counter wheels are separately operated, the movement of the latter in turn simply sets the pawls 47 by tripping the latches 50,

the carrying. mechanism being operated by separate devlces. The movement of the counter mechanism also operates the print-- ing beds,,the inking of the type and the operation of the platen being governed by an operating deviceof its own. These various parts being operated by separate solenoids, I provide a controlling key and switchdevlces whereby they may be controlled and the parts operated in their proper order to accomplish the oflice of each and in the end return them all to their normal positions.

c The circuits for controlling the various from a suitable generator, such V, and consistof wires 6 and f, which is-connected to the terdevices lead as a' battery the -first of minals of a main or controlling switch E passing thence through thehelices or magnets- W. The wire f completes the circuit through the latter and it is also connected in parallel with the various magnets X, Y,

Y and Z by branch circuits w, y, y and a, as shown particularly in Figs. 4 and 34. The circuit through the magnet X is completed through the wire w connecting with the terminals of a switch G, operated by a lever 9 connected to A it leads through .a contact point or insulated pin 00 on the lever 98. Pivotedon the side of the frame 1 is a spring operated contact member 149, adapted to engage the pin :2 and connected thereto is a conductor m leadthe lever 133, and thence ing to a terminal w in the secondary switch member F and by said mechanism adapted to be connected with the line wire 6 to complete the circuit through the helix X. The

circuit from the magnet Y is also completed through the conductor y" which leads to the terminal 22 A current passing over the circuits described at the present time operates all of the devices with the exception of the magnet Y4 which controls the operation of the inking pad,-the platen and the paper feeding devices and in order that these parts m'aynot be operated until the completion of the operation of the counter wheels, I extend the circuit from said magnet through separate automatic switches adapted to be operated by the separate counter mechanisms. For this reason the several setting levers 8 are insulated from each other and also from the frame of the machine, as shown by the heavy lines in Figs. 23 and-25. These levers are provided at their upper ends with insulated brackets 150 with pivoted contact fingers 151 extending over the ends of the levers and adapted to form an electrical connection therewith when engaged by'one of the notches on the coiiperating stop plate 20. The outer ends of .the levers are provided with weights 152 which are gravity oper ated into the position shown in dotted lines in Fig. 23 .to normally hold the contact fingers out of engagement with the levers to break the circuit passing through them.

The wire or conductor leading from the magnet Y, indicated by 3 is connected to one of the brackets 150 each of which is connected with the next adjacent stop lever by conductors y, the circuit being completed through the conductor a, connected to the last of said levers, as will be understood from an inspection of the diagrammatic view illustrated in Fig. 34. From this arrangement it will be seen that a current can 7 only be passed through the'magnet Y to operate the inking and printing devlces when all of the contact fingers on the several stop devices or levers are closed.

In Figs; 27 to 32 the controlling key H and the switches E, F have been illustrated, and the detail description of these parts will now be made. The main switch E embodies a segmental plate containing the contacts 6 6 shown in Fig. 32, with which coiiperates a movable contact arm 6. This arm is pivoted to the frame at 153 and it is provided with pins or studs 154 between which extends'a weighted operating arm 155 also journaled on the stud and provided with a pin 156. A latch member 157 is pivoted to the frame 1 and is adapted to cotiperate with the pin 156 to hold the movable switch member e in engagement with its co6perating contacts and it is provided with a foot or extension 158 arranged to be engagedand operated by thelever 60, in such a manner as to automatically open the switch E at the proper time, as will be further described.

The switch E is normally open and it is closed by the manual operation of the controlling key H, the lower end thereof being provided with a pivoted pawl or dog 159 which as the key is moved downwardly engages the end of the lever or arm 155 and operates the switch from the positions shown in Figs. 4c and 30 to that shown in Figs. 27 and 34C in which position the switch E remains until the completion of all of the other operations of the Various parts of the machine. The switch F embodies a segmental plate having two insulated contacts.

or terminals 7, f, to which the ends of the conductor 6 are attached, and a third contact plate :2 to which the conductor m is connected. The movable member cotiperating with these several contacts is in the form of a plate f pivoted to a stud 160 on the frame 1, and adapted to .be arrested in the normal position, by a stop 165, closing the circuit through the contacts f and m thereby placing the magnet Y in circuit and permitting the lever 98 to be operated to re store the parts controlled thereby to the normal position. On the side of the movable member f is a pin 166, shown in dotted lines in Figs. 27 and 29, with which cooperates the beveled end 167 of an operating latch 168 pivoted on the key H, whereby the member f is revolved on its pivot to the position shown in Fig. 27 to connect the contacts F f to close the circuit through the solenoids W whereby the several counter wheels are operated when the key-H is deressed as shown in Figs. 27 and 28. The atch 168 is operated laterally of. the key H by a spring 168' carrying at its enda pin 71, hearing against the lower end of the latch to move the latter in line with the pin 166.

' An offset 169 is provided in the latch to permit the switch member to be returned, as will be presently described, to its normal position before the controlling key has been released and the latch 168 carried from the operated position, shown in Figs. 27 and 28, to the normal position shown in dotted lines in Fig. 29. -At one side of the member is provided a foot or extension 170 and adapted to cotiperate therewith is a finger or projection 171 on the lever 98 and which engages therewith to return it to its normal position at the completion of the printing operation thus breaking the circuit through the electromagnetic devices W and Y to allow the computing mechanism to be re stored to its normal position in readiness to perform a subsequent operation.

The operation of the device will now be readily understood. The operator desiring to add a certain numeral .01 numerals depresses the corresponding keys in the respective units, tens and hundreds rows and which are indicated by A, B, C and D, and to enable a more comprehensive understand ing of the operation of all the devices, the various movements through which they pass will be considered in the actual operation of indicating the arbitrary number, which is 6420. This will be indicated by the operator depressing the keys numbered 6, 4: and 2 in the rows 1), C and B. As each of these keys are depressed they are held in theoperative position by their abutments 8 gaging beneath their respective locking bars l. If now the operator inadvertently or by accident had depressed the wrong key or keys in one or more of the rows, the mistake could be rectified by subsequently depressing the right key or keys, for as the latter are moved downwardly their locking bars would be disengaged from the keys previously operated, allowing said keys to return to their normal position when'the bars would subsequently engage the last operated keys.

As the several keys are depressed the respective setting bars 6 are moved by the action of the cams 11 on the pins 10 shifting the levers 8, to which they are attached, and setting themso that their upper ends are moved relatively to the center of. rotation of the stepped stop plates 20 which is the shaft 13. As a current is passed through the solenoids W the counter actuators 27 are (ill-' operated to revolve the counters and their stop plates into engagement with the setting levers. This"movement ofthe actuator is transferred through the shafts B, C and D to the printing beds 1), c and d so that the respective numerals 6, 4:, 2 and O on each are arranged in the printing position be neath the platen 87.

Up to this time the counter wheels a, I), 0 and d have remained in their normal position and are only operated to bring the characters upon their peripheries into view beneath the aperture l2'when the motor devices W are set in operation and the latter being electromagnetic devices are overned by the circuit previously descri ed and which is controlled by the oplerating key H. By depressing the key H t e cam surface 167 on the latch 168 engages the pin 166 on the movable late f and revolves it'from the position shown in Fig. 29 to that shown .in Fig. 27, connecting-the terminals f and f. Simultaneously the dog or pawl 159, on the lower end of the key H, engages the end of the o crating arm 155 revolving the latter from t e position shown in Fig. 30 to that shown in Fig. 27 in which it is locked by the latch 157 with the movable contact arm 6 engaging the contact points, 6 c and completing the electric circuit throu h the conductdrs e and f to the solenoids The electric 'current passing through the latter causes the cores 29 to be drawn inwardly revolving the pinions 13 and the stop plates 20 until they are arrested by one or another of the steps thereon engaging their respective levers 8. As the magnets operate all of the arms 27, one or another of the several steps on each stop plate engages the respective contact finger 151, movmg it into engagement with its lever 8. If none of the keys of any row are operated, the setting mal position to be engaged by the firststep,

indicating zero on the counter, which will close the contact point 151. In indicating the number selected, 6420, none of the keys. in the row A have been operated, the parts therefor remain at the zero position, as shown in Fi 3, although its motor device W actuates t e stop 20 and closes the switch formed by the lip 151 on its respective setting arm, while the-second, fourth and sixth keys respectively in the rows B, C and D have been operated. The stop plates 20 on the several counter wheels b, c, and d will havebeen moved through two spaces (see Fig. 23), four spacesand, six s aces respectively. It will be remembered owever that the counter wheels are revolved continuously in the same direction by their respective stop plates which are operated a distance of fromjone to nine spaces. These are then returned to the zero position by an oscillatorymovement,-the engagement and disengagement of the pawl 15 being accomplished by the movement of the shift plate 22, both the latter and the stop plate being returned to their normal position bysflitable resettin mechanism operating on the actuator levers 27 as will be hereinafter described;

The printing operation occurs subsequently' to the movement of the counter wheels and it is effected by a current passin gthrough the magnet Y, the circuit thereto from the battery 'V consists of thecon ductors indicated at various points by the reference letters f, 3/, g and e, the latter lever on said row remains in norwire passing through both the switches E and F. This circuit it will be seen is pro vided with a number of separate controlling switches, on the several levers 8, and will therefore be opened unless the contact fingers 151 are held in their normal closed position by one or another of the steps on the stop plates 20 when the latter have been operated into engagement therewith. The current flowing through the magnet Y causes the rod or core-107 to be movedupwardly carrying with it the end of the lever 98.- At'the beginning of this movement the pivoted trip arm 99 en ages the end 94, on

the frame 91, causing t e inking pad 92 to engage thetype on theprinting wheels, when the arm 99 is disengaged and the end of the slot 100 engages the pin 105, on the frame 91, moving the parts from the position shown in Fig. 7 to those shown in Fig. 8. During this movement the pins 93 have traveled along the slots "89 and the frame, carrying the platen 87, has been revolved bringing the latter forcibly into contact with the numerals on the printing beds. This downward movement of the platen carries with it the strip or ribbon of paper, indicated by 129, and the downward.

movement of the yoke frame 90 also oscillates the plate 119, which sets the pawl' 118, in position to advance the feedin roll 117 when the parts are returned to t e normal position. The finger 125 is lowered and raised again to' raise the aper, by the pin 127 dropping into the notch 128 on the plate 119, which occurs with the upward movement of the platen awa from the printing wheels, thus exposing t e numerals printed on the ribbon, as w1ll be understood from Figs. 4, 7 and 8.

he lever 98 as it reaches the limit of its upward movement returns the switch F to its normal position breaking the circuit through the magnet Y and connecting'the contacts f and m to complete the circuitthrough the magnet Y, composed of the conductors e, m, y, y and j and generator v, causing the core 107 to be moved downwardly to return thelever 98 and the connected. partsto their normal position.

The parts are returned to normal position by -means of the electromagnetic device or solenoid Z which is connected to the circuit wires e and f by means of conductors z, z,

m (leading to the pin a: on the lever 98) and the wire w, connected to the terminal 0:,

on the secondary controllingswitch F. The

latter terminal is connected with the contact f by means of the switch member f which is moved intothe normal position by means of the finger 171 on thelever 98 which engages the foot' or projection 170 on the swltch member when the lever is operated upwardly, as shown in Figs. 27, 29 and 34.

- The current flowing through the circuit thus formed causes the core 134: to be retracted and the lever 138 to be operated from the po sition shown in dotted lines in Fig. at to that shown in full lines, to return all of the segmental operating gears or counter actuators 26 to their normal position. This reverses the position of the shift plates 22, disengages the pawls 15 from the counter wheels and returns the stop plates 20 to their normal position, leaving these last mentioned parts as shown in Fig. 20. The movement of the lever 133 also closes the circuit of the electromagnetic device operatmg the carrying mechanism' wlnch extends through the switch G. The closing of this switch throws the solenoid X into the circuit consisting of the conductors f, m andra, the pin 0: and its contact member 149, the conductor 00, and the wire a. As the movable contact member 149 has but a limited upward movement it will be seen that the circuits through the.

helices X and Z are broken by the upward movement of the lever 98, so that during the printing operation there is no possibility of either the resetting 'or carrying mechanism being operated.

The necessaryadvancement of the next or relatively higher counter wheel one space when the sum of any two or more numbers on a lower counter exceeds 10, is done by means of the electromagnetic device K through which the current passes to move the levers 60 and 54 which in turn oscillate the 35 of the carrying devices, the deengagement with the abutments on the operated keys and the latter are allowed to return to their normal position in readiness for another operation.

I have not claimed herein the construction of the counting or registering mechanism,

.nor that part of the-printing. devices embodying the finger extending beneath the ribbon or paper, as these features are reserved to form the subject matter .of a separate application. I Y

I claim asm invention 4 1. In a calcu ating machine,- the combination with a plurality of keys, a setting member operated thereby and a counter, of a stop plate located at the side of the latter and movable independently of the counter and provided with notches, means for revolving the stop plate, connections between the plate and counter for moving the latter continuously in one direction, and connections between the keys and member for mov ing said member relatively 'to the stop plate.

In a calculating machine, the combination with a plurality of keys, a setting mem ber operated thereby and a counter, of a stop plate located at the side of the latter and movable independently of the counter and provided with. stepped notches corresponding to the several keys, connections between the keys and member to operate the latter-into position to arrest the plate in a position corresponding to the key operated, means for operating thestop plate and devices operated by the latter for moving the counter continuously in one direction.

3. In a calculating machine, the combination with a plurality of keys, a setting bar, a cam surface on one of the keys adapted to move the bar through one space and similar surfaces on the other keys adapted to move the bar through a successive number of such spaces, of a counter wheel, a stop plate connected thereto having steps or notches formed spirally thereon, means for revolving the stop plate and a pivoted setting member cooperating with the latter and operated by the setting bar.

l. In a calculating machine, the combina tion with a plurality of operating keys arranged m rows, a counter and a stop plate connected thereto and provided with notches,

of a setting bar operated by the keys, a locking barco'operating with the latter to retain a key in the operated'position, and a member controlled by the bar and cooperating with the stop plate.

5. In a calculating machine, the combina and an oscillatory stop plate for each row,

means for oscillating the plate and clutch devices operated by the stop plates for revolving their respective counters, of devices operated by the keys for limiting the movement of the stop plates, operating devices for each counter normally out of engagement therewith and means controlled by therelavtive lower adjacent counters for actuating them into the operative position. I

7. In a calculating machine, the combination with a plurality of keys, arrangedin rows, a counter and a stop plate for each connections between the latter and the counters for revolvin them in one direction, of devices operated y the keys for limiting the movement of the stop plates, a carrying mechanism and operating devices thereon adapted to engage the counters and means Operated by the lower counters for actuating said devices into engagement with their relatively higher counters.

8. In a calculating machine, the combination with keys arranged in rows, a counter for'each row, those in adjacent rows constituting relatively higher and lower counters, and means controlled by the keys for operating, their respective counters, of a pivoted carrying frame oscillating relatively to all of the counters, engaging members supported on theframe and adapted to cooperate with the counters, devices normally holding the members on the frame out of contact with the counters, means controlled by the lower counters for actuating the members into operative position with their relative highercounters and means for oscillating the carrying frame in one direction to move the members and rotate the counters.

9. In a calculating machine, the combination with keys arranged in rows, a counter for each row, those in adjacent rows consti tuting relatively higher and lower counters and means controlled by the keys for operating their respective counters, of a pivoted carrying frame oscillating relatively to all the counters, pawls thereon adapted to cooperate with the counters and latches carried on said frame for normally holding them out of engagement therewith, means operated by the lower counter wheels to release the latches and set the pawls into engagement with their relative higher counters and means for operating the carrying frame in one direction torotate the counters with which said pawls engage.

10. In a calculating machine, the combination with a plurality of relatively arranged hi her and lower revoluble counters and keys or operating them, of locking devices therefor, carrying mechanism controlling said devices embodying a frame movable concentrically to the counters, pawls supported on the-frame and cooperating with the' counters and latches mounted on the frame for holding the pawls out of engagement with the counters, said latches being operated by the lower counters to set the pawls upon the relative higher counter of each and means for operating-the carrying mechanism.

11. In a calculating machine, the combination with aplurality of counters, keys controlling the operation of the latter and locking devices forthe keys, of a carrying mechanism operating between the counters,

means for operating the carrying mechanism andconnections between the carrying mechanism and the locking devices for operating the latter to release the keys.

12. The combination with a plurality of counters keys controlling the operation of the latter and devices for locking the keys in the operated position, of a carrying mech- 1 anism operating between the counters, key releasing devices cooperating with the locking devices and means for operating the carrying Inechanismindependently of the keys and connections between said mechanism and the releasing devices.

13. The'combination with a plurality of counters, a plurality of operating keys for each having abutments thereon and locking bars adapted to engage the ,abutments, of a carrying mechanism between the counters, a releasing bar cooperating with't he' several locking barsto release the keys, means for operating the carrying mechanism and operating connections between the latter and the releasing bar.

14. The combination with a plurality of counters, operating keys for each having abutments thereon and locking bars adapted to engage the latter to retain the keys in the operated position, of a carrying mechanism between the counters, a resetting bar cooperating with the locking bars and means for adjusting it into and out of operative position relative to said bars, and devices for operating the carrying mechanism and the resetting bar.

15. In a calculating machine, the combination with a plurality of operating keys arranged in sequence, a counter mechanism and a setting'device comprising a lever, a longitudinally movable member operated different relative distances by each key and means actuated thereby for controlling the adjustment of the lever and the counter mechanism, of a printing bed having type characters thereon and operated by the lever, a platen cooperating with the bed and means for operating it.

16. The combination with a plurality of keys'and setting devices operated different relative distances by each key, and a printing bed having type means for operating ates with the setting in its movement-by'said devices, a movable inking device normally out of engagement with the printing bed, a platen and means for operating the inking device and platen successively into engagement with the bed.

17 The combinatlon with a plurality of the bed which cooperkeys arranged in notation from one to nine and a setting device operated a distance of one. space by the first key and moved different relative increasing distances by each subsequent key, of a movable printing bed having type characters thereon correcharacters thereon, of

devices and is limited 

